Book-cover machine.



A. JACOBS'. BooK cUvEn- MACHINE.

(Application l'ed Jan. 20, 1900.)

6 Sheets-Sheet l.

(No Model.)

m G V No. 66|,76.3. Patented Nov. I3, |900.:

` A. I JAMES.

Bo'oK covEn mAcHmE.

(Application led Inn. 20, 1900.) (No Model.) l 6 Sheets-Sheet 2.y

No. 66I,76'3. A Patented Nov. I3, |900. BooK covEnmAcHIm-z.

l. JAcos.

Y (Application led Jan. 20, 1900.) (N o Il n d e l 6 Sheets-Sheet 3.

ya: Noms Ps1-:ns co. No-rauwe.. wAsNwmoN. n, c.

Patented Nov. I3, |900.

l. JACOBS.

800K COVER MACHINE.

No. 66u63.

(Application led Jan. 20, 1900.) (No Model.) 6 Sheets-Sheet 4.

lm Q w w m me mams mens coV suoraurnu. wAsmNmoN. o. c.

6 Sheets-Sheet 5.

Patented Nov. I3, |900.

I. JACOBS.

' BooK cuves mamma.Y

(Application led Jan. 20, 1900.)

' Jah-nomma percus no, Puoam'nu., WASHINGTON, n. c.

No. 66u63.

'(Nul Model.)

Patented Nov. I3, |900. JAcos.

6 Sheets-Sheet 6.

300K COVER MACHINE. (Application med $1.29. 1900.) v

"(No ismael.)

un 'im m Wilma TN: Nonms PETERS sa, Puofoumm wAsnlNu'ron. o. c

ARTHUR I. JACOBS, OF HARTFORD,

ATNT FFIC.

CONNECTICUT, ASSIGNOR- TO THE SMYTH MANUFACTURING COMPANY, OF SAME PLACE.

iooK-COVER MACHINE.

slSEoIFICATIoN 'frmingpart of Ltters Patent No. 661,763), dated November- 13, 1900.

Application led January 20, 1900. .Jenni No. 23093. (No model.)

In the device of Letters Patent No. 580,111

t certain difficulties were experienced in regard to the vertically-moving picker-shaft. and the proper alinement of the samein taking up and laying down the cover-boards and in the movement of the same between the taking up and the laying down of the boards, and difficulties were occasionally experienced in discharging thecompleted cover from the forming to the finishing part of the machine, because once in a while a cover was liable tocatch and robe damaged in the said devices. Difficulties were Aalso experienced inconnec` tion with the devices for feeding the cover into and out of thepi'ess, and difficulties were experienced in connection with the feed of the back-.lining strip, and, further, inconnection with the support for the pile ofsupe-rposed and liuished covers; and the object of my invention is to overcome these diiiiculties.

ln my present improvement, as in the machine of the former patent, the glue-cylinder is revolved lirst in one direction and then in the other, and there are scrapers `acting in opposite directions, and any foreign materials, as well as liearly all the glue adhering to the surface of they cylinder, are scraped off by one of the scxapers.` The other scraper allows the surface from lwhich the glue is taken to the muslin to have the proper quantity of glue upon it, and it is kept free from l'oreign suhstances. The cloth or cover fabric l'or thesides or backs of the covers is cut `out ol' the propershapeandis received upon a cloth-rylinderand is held by grippers atthe advancing edge, and the cloth isbrought into 'contactlwith ,the glue-roll as thecyliuder but they form no partof theillustrationor demakes one revolution, and in this revolution Q the surface of the cloth receives the glue to the extent required.v The cloth glued is taken by grippers upon agripper-bar, that is moved laterallyto carry the cloth over and leave'it upon a platform that is moved up to position.

As in the former patent, the cover-boards are piled in receptacles, and the bottom board from each pile is carriedoutinto position to be taken by a picker device,`and the parts. vare so constructed that the boards are guided at the outer and bottom edges and are brought accurately to position, so that the external measurements of the covers Will be precisely alike,.regardless of any inaccuracies in the sizes of the cover-boards themselves, and thehacklining is made from astrip of paper that is `fed in progressively and of the proper length, lcorresponding to the height. of the l cover-boards, and there are cutters for deter'- mi'ning the Width ofthe lining, which cutters are adjusted simultaneouslywith the adjustment of, the bars and partsthat carry the cover-boards, so thatthe proper width of paper for the back-lining, according to the thickness of the book, is automatically insured.

a half-revolution, and the said parts are depressed and the cover-boards and back-lining brought down upon the glued inuslin, and the pickers force the platform down, and side bars y and edge-turuers actupon'lhe` top and bottom edges of the niuslin and f old the same over upon the board.

The functions of folding the edges of the glued muslin over the coveri boards described in my aforesaid patent are also to be performed in the present machine;

As in my former Hence a rollof paperof ample width adapted to the necessities ofthe back-lining strip is eming.

s. i I 4 l lscription hereof; A discharge-slide carries the completed cover out laterally in to a finish# ing-press and above a waterlbag, asin the devices of the aforesaid patent, and there is a platen and toggle-bars that press down upon theI cover, and the pressure is equalized by the action of the water-bag, so that the entire .cover is not 'only held, but subjected to a and neld by friction vand allowed to descend progressively as' the covers accumulate.

features relating to the means for connecting the `Vv ertically-moving` picker-shaft to the. de-

V torvvard-andfbackvward swinging movement of thepickenshaft and pickers-,.so as tofinsurethe part-s vpositively takingtheir proper position. There are also noveldevices'conf nected to th'edischarger-slide,its pulleys and belts, andaneans for actuating, the saine',

whereby as the completed'cover4 is discharged.r from the machineprovision is made. for the, operative devicesto yield, so that no damage arises to thev cover.. There are. alsonovel vfeatures for carrying the covers into the press "fand for discharging the same andfor'insur-v Q ingthevpositive.up-andedownmovementof the platenandan endless'bandfcarriedigbyit,l so that the@ parts arekept inalinem'entand vaneven pressure is'exerted; There area-lso novel `meansforgregulating. the-'feed of the.

back-lining'stripautomai icallb7 iii proportion toi. the length of the lsamerretpiired forenheg height of vthe cover-board sanddevices adapt- L `ed lo rein-ove 4Wrinkles or `une.ven'n'essinl the4` paper. means for actuatingthesamevfromtzh'e pileof! su'perposed coversfor progressively lowering the bracket carryingrthe covers andfforfrictionally holding the same' inv place, and further devices for'scraping the glue from a portion .of the glue-roll when the back-lining strips'are not used,all ot' which areV herein- `after more particularly described.

I-n the drawings, Figure l 4is an elevation at the right side of the machine with the press and adjacent.connected parts removed, and the supports therefor .are shown in. section. Fig. 2 is an elevation of the machine with they glue vessel, roller, cylinder-roll, the handwheel, and the platen devices removed.r Fig.

3 is an elevat-ionof the pressfcanj.. Fig,- 4. is' an elevation of the devices for su pporti-ng the rol-lI of paper foriningihe back-lining. strip. Fig. fis a diagrammatic View showing the de#` vicesior operat-ing'the discharger-sl'ide` Figi 6 is ar sectional `elevation offthe devices for actuating the back-lining strip.` and "govern ing-the extentlof Afee'dof thesame, 'andfFig :7' isa. plan view? Oi'thefoperati ve devices shown .p @Gins in Fig. 6. Fig. 8 is an elevation and partial sectionfof4 the devices for'impartin'g to the platen and the upper 'band an up-and-down movement Fig. 9 is a pllanvview of the parts shown in Fig. 8. Fig. vlOis a horizontal section Vof the friction devices employed in connection with the discharger-slide.` Fig.' l1 is a5 horizontal section at a; tof Fig.v 8, show- 'operating the scraper that entirelyremoves `the glue from a' portion ofl the glue-cylinderl jwhen the back-linings are `not,I applied to the In my present .invention there .are novel.

covers; `and Fig. Mis. asectiomin largersize, representing theV manner of connecting the p `removable-pins to the'clothcylinder.N vices for actuatinghe same soastofinsurefa positive motion and to eect the-periodical Where there.arefpartssshown andI described in thepresent application that correspond with partsshown and lescribed inmy former patent hereinbefore referred yto,.thesev parts have beengiventhesarnje characte'rsof. refervBB', audit.' is drivenv in the present device from a motor-shaft A.by pulleys A3, which :are controlled vby a clntchi'mechanismA the 'said'.m'otor-shaft. having. thereon-.a pinion 2,

meshing with thegear' (y, onwthe shaft of- WhichfafpinionflV meshes with `the-teeth of the l. gear Infthis, way the cam-shaft A can-.be 'driivenwith the necessarypowemand the saine can'. bestopped when. necessary' by operating ffthefclutchiA-,g Fig. 2f;- and' infordento i'nove v the*cam-shaft 'A'xwhen. said clutch isdiscon lnectedfa hand'fwheel 4(- linay `be operated,.and jupon-l the -sha-ftyot' the same-is a pinion C5, lnieshingwiththe'teeth-of 'thegearCQ so, as toico'mmunicate movem entto thegear C2 upon the saidcamshaft.lv These 'Various gears are youts-ide off the vframe Biot' theA machine and lare-shown particularlyl in Figs. YLand 2.

ICO

--Upo'n lhe'cam-shaftA (see Fig, 2) thecain.

D is shown, andtheps'a'me isgroovedrupon theright side to act upon thev rack-,Jever D', that gives motion lto' the cloth-cylinder I. The groove on the leftside ot' the camD acts upon therack--l'ever D2, that gives motion to the discharger-slide. The camE is grooved onits right `side to operatethe lever E to the exhaust-pump of the machine,.a nd the groove jon the V,lef-t' side of the cam E actsvupon the lever Efor raising and loweringthe pickershaft. N.. The ca ln `F is grooved upon its right-side to actgupon the lever F', that raises and lowersfa'platform, andthe groove upon its. left side acts upon the lever 'F2 to vrevolve fthe pickery and giive' motion tothe rack E4. 4Thecam G'isg'ro'ovedon its right. side and "ac tsupon rthe,levelGi-, that.givesmotiony to 'thet'urnersat-the top andbottom ofthe cover,

theoperatfion of which( is particularly d e -fscribfed in aforesaid patentnand tliezlever G2 is acted upon by the groove at theleft Vside of the cam, and the same actuates the second turners, also fully described in said patent. The grooves in these cams are laid out with reference to giving the proper motion to the respective levers and performingthe various operations required.

The glue-holding vessel H, Fig. l, is provided with flanges that extend out at its ends, which flangesare received in recesses in the frames B B' of the machine, so that the said glue-holding vessel is removable, and beneath this glue-holding vessel is a vessel H to hold hot Water for heating the glue, and it is advantageous to provide a suitable healeil for the water vessel, or in place thereof steam may be led into the water to maintain the proper temperature. Within the glue vessel H is a glue-roller H2, supported in bearings at the ends of the glue vessel H, and this glueroller H2 is advantageously made asa copper cylinder, with heads connecting the same to the shafts at the ends of the glue-roller, and there are scrapers 6 and 7,1hat are supported by pivots at their ends, and they are adjusted by suitable devices, so that the edges of the Scrapers are maintained in theidesired proX- imity/to the surface of the glue-roll, and this glue-roll is rotated first in one direction and then in the other by `a gear 12, and the operations are the same as described in my aforesaid patent.` Thescraper Figs. l, 12, and 13, is advantageoufslyset in such a manner as to scrape almost all the glue off the surface of the glue-roller, and the scraper 7 is set with reference to iallowing the proper `amount of glue to remain upon the surface of the roller for properly gluing the muslin or covering fabric by coming intorontact with the same, and it will be observed that the glue and other material adhering to the surface of the roller H2 as it is removed by the scraper slides down upon the convex surface of such scraper `6 and returns to the glue vessel H at a short distance from the roller. Hence foreign substances will be in the glue at the side nearest the operator, where' they can be observed and removed, and the clean glue will be at the back portion of the glue vessel, ready to pass up on the surface of theroller Hzasihesameis broughtinto contact with the covering'fabric upon the cloth-cylinl2 upon the shaft ofthe glue-roller., .'lhusf the glue-roller is moved backward and forward constantly while the machine is in mo` This rack D4 is tion; but the cloth-cylinder I is entirely under the control of the attendant, so that the same may be stopped, and it remains without being moved until the attendant again brings in the actuating mechanism bythe action of his hand, as particularly described in the'aforesaid patent. The supply of the covering fabric or muslin can thus be stopped and a partially-finished cover completed and the movements of the parts arrested with the machine substantially empty, there being no incomplete book-cover in the machine. This is of great ad vani-age, because it' the machine is stopped after afabric cover has been glued and before the cover-lmards and back-lining are applied to the same and the edges turned over and completed, such cover is valueless, because it cannot be finished after the glue has cooled or set, and in consequence of the `supply of' the covering fabric being entirely under the control of the attendant and independent of the other operations of the machine there is no risk of the covering fabric being carried in until after it has been properly placed upon the cloth-cylinder I, and it is to be understood that a complete cover is produced at each revolution of the cam-shaft A; but should the covering material not be' in position the automatic movement of the clothcylinderat the proper time is suspended by the attendant until the parts come around to give motion to the cloth-cylinder at the proper time, Therefore, the cloth is fed in in harmony with the movements of the other parts of the machine, it being understood that the fabric or cloth is cut out to shape in any desired manner, and the same is laid upon the cloth-cylinder by hand. This clothcylinder I is preferably made of metal and is rather more than half a cylinder, and there are heads to the same by which it is supported upon the shaft 3, and between the said heads the gripper-shaft n (see Figs. l2 and 13) exrco tends adjacent to one edge of the cloth-cylluder, and the grippers upon this shaft are made in the form ot' short hooks, so that when the grippershaft is partially rotated' these hooks swing over and catch the edge of the cloth as it is laid upon the cloth-cylinder, and these grippers are operatedl iuany desired manner.

. The band-pulleys K K, l and 2, are adjacent to and are connected with the gear wheels g at each side of the machine and Within the frames, and the bands Z Z are fastened at their ends in any desired manner to these pulleys, each pulley being grooved, and the bands extending around the pulleys in opposite directions pass off horizontally above and below these pulleys, and the `bands Z are connected atftheir back ends withthe crossbar L,\that slides at its` ends in grooves in the upper portions of the frames B B, and the bands Z extend around the back-band pulleys li and are connected at their ends cloth-cylinder I. This cross-bar L carries a gripper-shaft, with fingers n 0,' that are adapted to close down upon the edge of the 'covering fabric and t0 remove the same from the cloth-cylinder I and in the movement of the said part'svto deposit'the said cloth upon the platform P. VThese grippers are operated and the parts'are timed in the manner d'escribed in my aforesaid patent, these 'parts forming no part of the present invention and being fully described in theaforesaid' patent. All the parts before described are substanf tiallythe-same as in myaforesaid patent and are Aonly herein described in order that the' improvements herein may ber more clearly understood. The platform P is supported upon the platform-post P. This is guided at the, lower end byacross-bearer P2 upon the frame of the machine, and-the upper part of the post P slides in av suitable bearing P3, extending out from the back frame B5, and there are Y a time forwardfroin'their respective hoppers 1 into position to betaken by the picker-blocks springs 14 adjacent to the lowerend ofA the said platform-post connected at their upper ends to pins projecting from the bearer P2 I andat-their lower ends toa cross-bar secured to the lo'wer4 end of the post P', which springs 'are sulicient to counter-poise the weight of the platform and the parts carried by it, or, nearly soin order that the platform-cam F may' through' the arm' F `readily move the yplatform up and down and arrest the move- 4 ments of the same at the proper points without being obliged Ato lift the weight* of the platform and parts carried with it. The backv end of the said arni'F slidesin a guideupon the frame Briandv this arm F is provided with a roller 'or pin entering the groovedcarn l F, by -w'hichthe'movements are-given to the platform. y' The discharger-slide `40, which is my'aforesaid patent, and the same isconn'ectedto the belt43, passing around pulleys 44 and 60. The parts for operating .this discharger-slide 'and the said pulleys so "as tol deliver the finished cover are morev particu larly hereinafter described. The side frames 48 of the nishing-press are bolted to the side frames B' of the machine, 'and they extend out as supports for the platen, bands, and the operating devices hereinafter set forth.

As in myv former patent, so inthe present case the cover-boards are received between. plates 76, Where they are piled one` upon the other.' These. plates are supported by hopf` per extension-bars 74, and bands 85,` passing around ,band-wheels 84 and the devices connected therewith, bring two cover-boards atv 1,30fas'thesame are brought down uponithe cover boards,- the said pickerblocks being groovel receiving a rib upon the pinion-sleeve to connect the two parts; but in consequence of the wear of the parts there was in time a slight play between the picker-shaft andthe pinion-sleeve which caused an unequal move= ment to be` given to the.pickerarms and blocks, and the-cover-boards and back-lining were not always laid upon the covering ma'- t-erial in exactly the .proper position, and the devices hereinafter set forth areprovided for overcoming said difficulty. These' devices comprise the lever E2, tow'hich motion is imparted by the cam E. (Seexespecially Figs. 1,2, 6', and 7.) The fi'eeend of said lever acts upon the lower end of vthe pickershaft N, and said shaft is guided inthe bearingblocks 15 and 126, secured -to the frames of the maehine,and at the upper end of the' said `picker-shaft-is'connected the. picker-arm N, carrying the picker-blocks 130. Secured to this pieker-shaftN is a huh' 20, carrying a pin 2l, and these parts :move vertically with "thesaid picker-shaft. A segment 125 is made fwith a tubularprolongation fitting and turn- `ing in the bearing,126, and through the said tubular portion the picker-'shaft N` moves Evertically. This bearing 126 is secured to the frame BF, and uthese parts are especially IOO illustrated-1inV Figs'.` `5 and 7. VThis segment is engaged bythe teeth of the rack E4, :and this rack is connected'by a link to the Alever Fg.` The rack E4`is'provided with both jledgeand upper surface teeth, the edge teeth, ;'Fig.i7, acting upon thel segment 125 and the surface-'teeth upon a pinion 101,'hereinafter (more particularly )described ywith reference to theopera'tion of the,` other'. parts of the gmachine. The bearing'lrZ has connected to it a slidewayT 27 for the saidr rack E4.' In the said segment'l25`is' a hole for the reception of ,the` pin 21 as` the picker-shaft rises to its A highest position, andwhen in its lowest posi- "tion 'the 'said shaft carries the`hub. 20 and pin 21 down with it lout of engagement with thesegment 125, In Figs and 7 the pin 21 is shown in engagement with the segment 125, and it will be seen that in this position .when the rack E4 is vmoved .by the lever F2 the'segment will be turned and with it'` a par.- tial rotation :will be imparted to the pickershaft N and the picker-arm N', so as to swing jthe piclgerf-blocks 130 from one position to 'the other, or, in otherwords, from the 'posiltion where' the'cover-boards and back-lining f'str'ip have beenengaged by the suction of the lsaid picker-blocks to the position where the saidr'parts vare placed upon the-glued sheets andfreleasedby the said picker-,blocksprvice versa', for `thereturn,movement. -f In the'posi- IIO tion shown in Fig. 7 the arrows indicate the direction oi' the next movement. The parts are so timed that the lever Wand the rack E4 are only operated to impart a half-rotation to the segment 125 when the pickenshaft N is in its elevated position and the pin 21 in engagement with the segment. 125. In this way the vertically-moving picker-shaft is connected to its actuating-gear and its periodical forward and backward swinging movement is eected.

I provide curved arms 119, connected to the side frame B of the tnachine and extending over toward the center of the machine and terminating in vertical slideways 120 and 122, and at the upper end of each of these slideways I provide notches 121. These slideways are not only in line with each other, but in line with the picker-shaft N, and the free end of the picker-arm N is formed so as to lit in the said slideways, and with the forward and backward movements of the said picker-arm the said free end passes over the notches 121 into the upper end of the said slideways, these slideways serving the purpose of positive guides for the free end of the said picker-arm wit-h the vertical movement of the picker-shaft, both when the pickerblocks 13oy take up the coverboards and backlining strip and when the said cover-boards and back-lining strip are deposited upon the glued cloth forming the back. The slideway 120 is longer vertically than the slideway122, because a greater movement is imparted to the pickershaft and its arm When the cover is formed than when the picker-blocks simply 'engage the cover-boards and the back-lining strip. Figs. 1 and 2 show these parts particularly.

In the machine of my aforesaid patent a cover occasionally became caught and damaged in it-s movement by the discharger-slide from the platform Pto the finishing-press. rlhe devices next described relate to means for preventing injury to the cover in case the movement of the same in its passage from the platform to the finishingpress becomes obstructed.

'lhe discharger-slide 4() is similar to the one shown and described in my aforesaid patent, and it is supported also by similar devices to those shown in the said patent-namely, oya bar 41 extending through the machine and on which is the slide-block to which the discharger'slide 410 is secured, while the other end of the discharger-slide 40 is guided in the frame B3 of the machine. This dischargerslide l0 is connected to and actuated by the belt 45, which passes around pulleys 44 and (if). Motion is imparted to these devices by the cam D on the shaft Aoperating the lever D2, to which is connected a rack-bar 16, the teeth of which engagea driving-pinion 17 on the hollow shaft. 18, which hollow shaft 18 su rrounds ast ud 22,sn pported in the frame B5 and secured by the nuts 23. (See Figs. 5 and 10.) The pulley 44 is of ordinary grooved form,

mounted ou a suitable shaft; but the pulley GU is loose noon thehollow shaft 18, which extends-around the stud 22, the said pulley being located between the toothed Wheel 29 and a friction-collar 30, held in place bv the clamping-nut 31, which is screwed upon the outer su rface of the hollow shaft 18. This hollow shaft 18 carries the pinion 17, meshing with the rack-bar 16, and the outer end of the hollow shaft 18 carries a ratchet-wheel 19, and it. is stepped sectionally, as Will be seen by reference to Fig. 10, and on the same, between the ratchet 19 and the pulle o0, is the toothed wheel 29, which toothed wheel carries the pawl 28. (See Figs. 2 and 8.) In the operation .of these part-s the rack-bar 16 rotates the pulley 17 and the hollow shaft 18M and also the ratchet 19 positively in bot-h directions. Then the ratchet 19 is turning in the direction shown by the arrow, Fig. 8, it positively turns the toot-hed wheel 29 through the pawl 28, so as to rotate the same to operate the endless bands and devices hereinafter described at the same time the pulley 60 is operated, moving the belt 43 and also rotating the pulley 44 and operating the dischargerslide to removel the finished cover from olf the platform P and into the finishing-press. The pulley 60, it Will be seen, is moved entirely by friction, more or less of which is applied through the lcollar 30 by the nut 3l, and this friction is sufcient 4under all ordinary circumstances to operate the discharger-slide and remove the cover bodily from the platform P and into the linishing-press; but should the cover in any way become stopped in its movement the pulley 60 will be at once arrested, While the shaft 18 and the other parts continue their movement, so that the cover will not be damaged by being stopped. As soon as the cover is released the friction will again act between the parts to rotate the pulley 60 and continue the movement of thecover from the machine. These devices for actuating the discharger-slide also impart a movement to the upper and lower bands which receive and continue the movement of the finished cover into the finishing-press, so that While one cover is being made in the machine beneath the picker-blocks 130 the previouslymade cover is being pressed, while the glue is consolidating previous toits fnaldischarge, so that the finished covers follow one another in rotation.

'ihe platen Z2 is supported and operated by devices hereinafter described, and the same is located above the bed 50, to which is connected a sheet of rubber 51 by clamping-bars 52, there being water between the bed() and the sheet of rubber 51 at the point Where the nished cover is linall \7 pressed by the platen, the Water device being the same as employed and Shown in t-he machine ofmy former patent. s

The Wheel 29 meshes with a pinion 32 in Cis IDO

IIO

bearin gs supported with the gears and rollers,

hereinafter described, by the frame 48 of the machine, whichv is bolted to the main frame B. (See Fig. 8.) The gear 32 meshes with the gear 33, and the gear 33 and the roller 36 are on the same shaft, and the under endless band d passes around this roller 36 and eX- tends over the water-bag device and around .a roller`37, at one end of the shaft of which belt`43 to move the discharger-slide and deliver the cover off the platform P and between the bands c d. The said wheel 29 simultaneously operates the gears 32 and 33, driving the under band d, the roller 37, gears 34 and 35, the rollers 38 and 39, and the upper baud c. The movement of the parts is so timed thatthe' bands c and d are arrested when the cover occupies the proper position. over the waterbag. Then the pressure is given to the cover, as hereinafter explained, and while such pressure is being given the belt 43 and the discharger-slide return to their-original position to carry 'forward from the platform P the next cover. While the next cover is being delivered from the platform P to its place above the water-bag, the first or previous cover is delivered by the movement of the said bands c d out of the machine and upon a bracket or tableU. The water-bag below the platen b is supplied with water from the cylinder e2 by the piston e through the pipe e'. It is to be understood that the belt 43'and discharger-slide 40 are carried forward during the upward movement of the rack-16 and that during thedownward movement :of said rack the belt 43 and discharger-slide are carried back to their rst position by the reverse movement given to the pulley 60; but the wheel 29 does not turn backward, because the pawl 28 rides over the teeth of the wheel 29 and, further, Abecause the resistance offered by the power required'to move the gears 32 33Yand endless belts prevents the wheel 29 being rotatedduring the backward movement' of thebelt 43.- g y The devices for imparting an up-'and-down movement'to the platen andthe endless band c carried thereby com prisethe following: The lever 59 is pivoted at 147 to the main side frame B' of the machine and on one end it has a roller inia cam-groove in the gearwheel-O2, and on the other end of said lever isaconnecting-rod w, extending upward and y pivoted t the crank 47. Extending through, theframe 48g which is bolted to the frame 41,.

Y are the shafts 45 and 46, and the said crank 47'isconnected at oneend'of the shaft 45, and shafts 61 and 62 are connected to the' shafts 45 46 by cranks 53 and 54, and a link lfartherapart at the rollers 36 and-3S-).

vtuates the gear 101. yupon the shaft 83, which shaft is in suitable vbearings in the frame102.

' 55 connects the shafts 61 and 62 together at.

one end. Links 63 and 64 are pivotally connected at their upper ends to opposite sides of the platen b', and at theirlower ends said links are connected 'to the shafts 61 and 62. In the movement of these devices the said lever 59 is swung by the cam on the gearwheel C2 and the connecting-rod w is lowered, thus swinging the crank 47, turning the shaft 45, and swinging the cranks 53 and the shaft 61, and by the said parts and the link 55 also swinging the shaft 62, cranks 54, and shaft 46 to simultaneously draw down the links and 64 and the platen b and give the desired pressure to the book-cover between the bands d c, and when the rod w is raised by the cam ou the, gear-wheel C2 the platen b and the belt c are raised and the parts are brought to the position shown in Fig. 8 and the cover is free to be carried outof` the press by the neXt movement. given to the bands d c. A pin 56 is secured' in the upper surface of each frame 78, and the pins pass into holes in the under surface of the platen b. The said pins form guides to prevent any shifting of the platen in its relation to the frame 48.

By reference to Fig. 8, which shows the parts of the press in position .to receive a cover carried into the press and for a cover in the press to be carried out, it will vbe seen that the belts 'd and c come closely together atV the rollers 37and 38,7while said belts are much 'lhe object of this is to allow ample space between the belts for the cover to enter the press, while at` the delivery end the cover is slightly pinched by the belts, so as to insure the cover' being carried outv of the press by said belts when they receive their forward movement.. The roller 38 is inbearing-arms 110, pivoted at 97, and the said roller and-belt c are by their weight kept almost in contact with the belt d at the roller 37, and the roller 38 and belt c slightly lift as the cover is passed out between said rollers 37 and 38, and the teeth of the Wheels 34r and 35 are made sufficiently long to-prevent their separation when the finished cover passes through between them.

Devices for regulating the feed of the baciclllnt'fng strip-. #The rack E4 as it moves back and forth, operating `the segment 125, also ac- This gear 101 is loose y Upon the shaft 83 is a gear 24 andadjacent'clutch 104, which gear and clutch are'ttedto slide upon av spline on the said shaft-83. The clutch 104` carries a pin 27, a hole being provided through the wheel24 and into the wheel 101 to receive saidpin 27-when the gears 101 and 24y are sideby'side. The clutch 1 04 and its pin 27 are moved longitudinally of the shaft 83 by a clutch-arm 106, mounted on a pi vot-shaft 107 in bearings in a bracket secured to the frame B5, andto which pivot-shaft 107 a lever 108 is connected for swinging the saidclutch-arm 106 and operating the clutch 104 and its pin IOO TTO

v upon. rwhich the cocer-boards are delivered frame 48, and these arms 95 are slotted to re` ceive the pinsV 97, projecting from the sides.

of the platen b. The outer ends of the arms 95 supportthe bar 98, and abar 99 is su pported from the bar 98 by the links 100. One of these links 100 is made with a depending 136, a portion of which is round and a vertislotted bar 131, the lower end of which is a compound curve, as will appearl from Fig. 8.

A frame or slide bar T is at its upper end connected bya bracket 134 to the press-frame 48, and in thisslide-bar T' isa slide-block 135,

connected to the bracket T, which bracket supports the ltable U, receiving` lthe finished covers in superposed order. lBetween the slide-block 135 and the slide-bar T' is` a rod cal side of which is flattened, there being'in the slide-bar '1" and also partially in the slideblock 135 grooves which correspond with but are slightly larger than the said rod. To the upper end of this rod 136 is rigidly connected the crank-arm132, (see Figs. 8 and 9,) the free'end of the said crank-arm entering the slot of the` bar 131, and I employ a spring 133 with one end fastened to the bracket 134 and the other end fastened to the crank-arm 132.

These parts are shownin their normal yposi-y tion'in Figs. 8, 9, and 11, where the said spring 133 holds the crank-arm in a position approximately at\right angles to the side frames of the machine and parallel with the rollers 98 and 99 and with the rod 136 in the position shown, so as to frictionally hold the slide-block 135 and the bracket T in a lixed position in relation to the slide-bar T'. These parts operate as follows: The'covers are deliveredl from between the endless belts c d upon thel table U, and with each downward movement of the platen b the a'rms 95 swing on their pivots 96, because of the action-of the pins 97 in the slots of said arms. The outer ends of' said arms 95, together with thebars 98 and 99the links 100, and the slotted bar 131, are thus given a downward-swinging movement, `and during said movement kthe slotted portion of the bar rides over the free end of the crank-arm132, and in so doing the links 100, the bar 99and the slotted bar 131 swingl on the bar98 as a pivot, and thereby the said bar 99 is brought considerably lower than 'the bar 98. It is to be understood that during said movement of the parts the crank-arm 132 is not moved, because the spring 133 is of sufficient strength to hold said crank-arm iinmovably in place. As soon as lthe bar 99 comes in con' tact with the top cover of the pile of covers the movement of the bar 99 is arrested, while the arms 95 and the bar 98 continue the movement with the platen. Consequently the slotted bar 131 swings on the bar 99 as a pivot, and this motion swings the Vcrank-arm 132 and turns the'rod 136, bringing the fiat surface of the 'rod and the adjacent `flat surface of its recess into parallel planes, releasing the grip of the bar and allowing the bracket T and the table U to descend an extent sufficient to release the pres? sure on the rod 99 and allow the spring 133 to draw back the crank-arm 132 to its normal position when the'rod 136 will again frictionally hold the said .bracket and table. These movements are progressive as the coverboards are piled upon the table, each movement being approximately about the thickness of the cover-boards when they reach a certain height. y

represents arms secured to the side frames 48, and to saidV arms are connected hanging aprons 73, that form guides for the covers to slide upon as delivered from the belts c d, the same as in my aforesaid patent- Only a portion vof one apron is'shown in Fig. 8.

Debicesfor scraping the gluejrom the glueroller-With the present machine it is possible not only to cover the entire surface of cloth-for the cover-boards with glue, but'also to cover a strip just wideenough to join the' two cover-boards for the back of the book. In this latter case the cover-boards are usually surfaced with paper by hand, or they may instead be surfaced with leather. A backlining strip may be employed both with the cloth for the entire cover or the cloth simply joining the cover-boards for the back, or the is secured to a .pivot-shaft 142, to one end of` which is secured a lever 141. A spring 146 acts against the short end of the lever to swing the long end of the lever up toward the clothcylinder I and to keep the edges of thedryback scraper against theV surface of the glueroll H2, so as to scrape off the glue atthe place where the said dry-back scraper comes in contact therewith, and I would remark that this dry-back scraper may be of any desired width, according to the work to be accomplished, or, in other words, to the distance between the covers and the thickness of Athe book proposed. One end of the cloth-cylinder I is provided with an annular vundercut groove 143, and said groove is provided with a notch or enlargement atl 144,- through which the bases of the pins 145 are passed into the un- IOO IIO

dercnt groove, as will be seen from Figs. 12 and 14. The long end ofthe lever |41 is preferably made with a portion curved to correspond with the arc of the groove 143, with the free end of the said lever, and with the portion thereof adjacent to said curved end tapering away from the said curved portion, so that with the rotation of the 'cloth-cylinder I the pins 145 come in contact with the said lever 141 and swing the same upon the pivots'haft 142 against the action of the spring 146 to remove the edge of the dry-back scraper 140 from the surface ofthe glue-cylinder, so that for the period removed the glue remains upon the surface of the glue-roll. The pins 145 are so located and secured in the undercut groove 143 in connection with the timing of the parts that glue is left upon the surface of the glue-roller to come in contact with the cloth at the places where the edges are folded, which places come at the opposite edges of the back. v When the glue is to be applied to the entire surface of the cloth for the cover, the pins 145 are to be removed, and by placing the free end of the spring at the opposite side of the lever 141 said lever will rest upon the frame of the glue-pot and the scraper 140 will be away from the glue-roll.

The special features herein before described form valuable additions for the successful operation of the machine described and shown in my aforesaid patent.

I claim as my invention- 1. In a machine for making book-covers, the combination with a picker-shaft and picker-.arm connected therewith, of means for imparting a vertical periodical movement to the said picker shaft and arm, bearings for the said picker-shaftin which the same is moved vertically, a toothed segment surrounding the picker-shaft and supported at one of the said bearings, a rack engagingV the said segment and means for periodically moving the said rack to swing the said segment and means projecting from the picker-shaft below the toothed segment for periodically engagingthe said segment and locking the two parts together, whereby a forward -andbackward movement to the extent of a half-revolution is imparted to the said picker-shaft, substantially as set forth.

2. In a machine for making book-covers,

the combination with the picker-shaft and picker-arm connected therewith, of means for im parting a vertical periodical movement to the said picker shaft and arm, bearings for the upon the frame of the machine receiving the free endsof the picker-arm which also act as stops to limit. the movement of the said pickerarm and determine its respective positions, substantially as set forth.

8. In a machine for making book-covers, the combination with a vertical picker-shaft and horizontal arm at the upper end of the same and beari ugs in the frame of the machine for the said picker-shaft,of a lever and means for actuating the same for raising and lower- ,ing the said picker-shaft,` a toothed segment gaged when the picker-shaft is moved down- Ward, substantially as set forth.

4. In a machine for making book-covers, the combination with a vertical picker-shaft and horizontal arm at the upper end of the same and bearings in the frame of the machine for the said picker-shaft, of a leverand means for actuating the same for raising and lowering the said picker-shaft, a toothed segment surrounding the said picker-shaft and supported adjacent to the upper bearing of the said shaft, a rack engaging the said toothed segment and a lever and means for operating the same for imparting a half forward-and-backward rotation to the said toothed segment, and a hub upon the pickershaft, and a vertical pin connected to the said hub and adapted to be received in an opening therefor in the toothed segment, the said hub and pin moving vertically with the said shaft and coming into locking engagement when the picker-shaft is in its elevated position, substantially as and for the purposes set forth.

5. In a machine for making book-covers, the combination with a discharger-slide, the belt connected therewith and the pulleys around which said belt passes, of a stud fastened to and supported by one of the frames of the machine, a hollow shaft around the said stud and on which one of the dischargerslide pulleys is loose, a pinion mounted on said hollow shaft and a rack and means for moving the same in first one direction and IDO then in the other, a friction-sleeve coming Y against the said loose pulley and a nut for applying a regulatable tension to the said sleeve and loose pulley, substantially as and for the purposes set forth.

6. In a machine for making book-covers, the com bi nation with the discharge r-slide, the belt connected therewith and the pulleys around which such belt passes, of a stud connected to and supported by one of the frames of the machine, a hollow shaft surrounding the same, a pinion upon one vend of said hollow shaft, and a rack for rotating the said shaft first in one direction and then in the opposite direction, a ratchet formed 011.y the outer face of the said hollow shaft and a loose toothed wheel coming between the ratchet and the loose pulley of the discharger-slide, a pawl on the face of the toothed wheel engagingthe said ratchet, a means for applying friction to the opposite surface of the discharger-slide pulley to clamp the same against the said toothed wheel to hold the said toothed wheel with a regulatable friction, substantially as and for the purposes set forth.

7. In a machine for makingy book-covers,

the combination With the discharger-slidewhe belt connected therewith and the pulleys f around which such belt passes, of astud connected to and supportedby one of the framesy of the machine, a hollow shaft surrounding the same, a pinion upon one end of saidhol'- low shaft and a rack for rotating the. said shaft firstin onevdirection and then in. the

opposite direction, a ratchet formed on the outer face of the said hollow shaft, andi a loose toothed wheelcoming betweenthe said .ratchet and the loose pulley of the dischargerslide, a pawl on the face of the toothed. wheel engaging the said ratchet, a meansfor applying friction to the oppositersurface of the'dischargenslide pulley to clamp the same against the said toothed wheel to hold the said toothed wheel with a regulatable friction, a

Wheel engaging the toothed Wheelf and a con nection therefrom and endless belts driven thereby for continuing thev movement of. the nished cover from the discharger-slide, substantially asset forth.

8.v In a machine for making book-covers, the combination with a rack and pinionand alever and cam for actuating the same,r of a.

hollow shaft operated. by the said pinion=, a ratchet on the opposite end of the said hollow shaft, a loose toothed wheel surrounding theV said shaft adjacent to the said ratchet, and a pawl on the face of the toothed wheel engaging the ratchet, a gear meshing with` the said toothed Wheel, and a second gear meshing'` with the rst gear, a roller on which the second gear is mounted and an endless belt passing around 'said roller, whereby the belt isV a lever and cam for actuating the same,.of a`y hollow shaft operated by the said piniona ratchet on the opposite end of the said hollow shaft, a loose toothed wheel surrounding thev seines said shaft adjacent to the said ratchet, and a ing the ratchet, a gear 32 meshing with the said toothed wheel-and a gear 33 meshing with the gear 32, a roller 36von the shaft of thegear 33 and supportstherefor from the main frame of the machine, a roller 37, a gear 34 on the Ishaft of the said roller and supports therefor from the frame of the machine,.an endless @bandd passing around rollers 36 and 37, a -gear 35 meshing with the gear 34 and a roller 38 on the same shaft as the gear 34, and a platen to which the roller 35 and gear 38 are connected, a roller 39 on the opposite end of thesaid platen andbearings therefor in the Tplaten and an endless band c passing around the rol-lers38 and 39, the said endlessbands `'conveying and delivering from themachine Q the finished.l cover, substantiallyl as set forth.

`l0.. Ina machine for making book-covers,

the combination withL a supporting-frame, a

bed andtayielding surface thereon, of av platen abovethesame, aguide for the. said platen,

`links pivoted to opposite sides of the platen,

shaftsconnecting they lower ends of the said links, alinkconnecting the said shafts, shatts pivoted in the.: frame and cranks connecting theipairs of shafts, and meanssubstantially as specifled for actuating the shafts of the frame and swinging the links of the platen to impart an up-and -down movement to the platen, substantially as set forth.

11. In a machinefor making book-covers, the combination withV a supporting-frame, a bedandayieldingsurface-thereon, of a platen labove thesame, a lguide for the said platen,

links -pivoted tio4 opposite sides of the platen, shaftsconnecting the lower ends of the said linksa link connecting the said shafts,shafts pivoted inthe frame. and cranks connecting the pairsof. shaftsa crank connected to one end of one shaft inthe frame, a connectingrodsecu red to saidcrank and aleverand cam for actua-ting thev said connecting rod and crank to im part thereto an u p-and-down movement for swinging the cranks and links and actuating the platen, substantially set forth.

l2. In. amachine for making book-covers, the combination. with a supporting-frame, a

`bed and a yielding surface thereon and a platen abovethesame and means for imparting an up-and-down movement to the platen,

of a roller 37 anda gear 34 at the end of the XOO IIO

LII

6mes 1i the water-bag and belt and an endless belt around said platen, rollers supporting said belts and around which they are moved and means for imparting an up-and-down movement to the platen and the upper belt, substantially as specified.

14. In a machine for making book-covers, the combination with the supporting-frame, the bed and a water-bag forming a yielding surface above the bed, of an endless belt around said bed,and Water-bag,a platen above the Water-bag and belt and an endless belt around said platen, rollers supporting said belts and around which they are moved and means for imparting an up-and-down movej ment to the platen and the upper belt, means for moving said belts and simultaneously bringing the cover from the platform P to and beneath the platen and discharging a cover therefrom, substantially as set forth.

l5 In a machine for making book-covers, the combination with the supporting-frame, the bed and a water-bag forming a yielding surface above the bed, of a platen above the bed, rollers at the ends of the bed and platen, and endless belts around said rollers, gears connecting the belts, and means for actuating the lower belt and for simultaneously bringing the cover from the platform P to and beneath the platen and for discharging a cover therefrom, substantially as specified.

16. In a machine for making book-covers, the combination with rollers and gears for feeding the back-lining strip into the machine, and a loose gear, its shaft and friction devices for engaging the same in one direction for actuating the said rollers and gears, of a pinion on the shaft of the loose gear, a rack for revolving the pinion, shaft and loose gear, and adjustable and regulatable devices actuating the rack for imparting the desired longitudinal movement thereto, substantially as set forth.

17. In a machine for making book-covers, the combination with rollers and gears for feeding the back-lining stripinfo the machine, and a loose gear, its shaft and friction devices for engaging the same in one direction for actuating the said rollers and gears, of a pinion on the shaft of the loose gear, a rack for revolving the pinion, shaft and loose gear, and adjustable and regulatable devices actuating the rack for imparting the desired longitudinal movement thereto, devices actuated by the source of power for operating the said adj ust-able and regulatable devices and means for disconnecting the same when desired from the said power devices, substantially as set forth.

1S. In a machine for making book-covers, the combination with rollers and gears for feeding the back-liningstrip into the machine, and a loose gear, its shaft, and friction devices for engaging the same in one direction for actuating the said rollers and gears, of a pinion on the shaft of the loose gear, a rack for revolving the pinion, shaft and loose gear, and adjustable and regulatable devices actuating the rack for imparting the desired longitudinal movement thereto, and by which the relation of the parts may be altered for effecting a variation in the length of feed of the back-lining strip, substantially as set forth.

19. In a machine for making book-covers, the combination with rollers for feeding the back-lining strip into the machine, gears for operating said rollers and friction devices for `moving said gears in one direction, of a rack and pinion for actuating said gears and friction devices, a crank and connections therefrom for actuating the said rack, an adjustable connection between the said crank and rack for shortening or lengthening the throw of the crank and imparting greater or less movement to the said rack, and means for actuating the said crank, substantially asset forth.

20. In a machine for making book-covers, the combination with rollers for feeding the back-lining strip into the machine, gears for operating said rollers and friction devices for movingtsaid gears in one direction, of a rack and pinion for actuating said gears and friction devices, a slotted crank, gears and a rack for impart-ing a backward-and-forward movement to said slotted crank, and means for disconnecting the same, a crank-pin movable longitudinally in the said slotted crank, means for determining the position of the said crank-pin and a connection from the same to the rack for actuating the back-lining feed, substantially as set forth.

21. In a machine for making book-covers, the combination with rollers for feeding the back-lining strip into the machine, gears for operating said rollers and friction devices for moving said gears in one direction, of a rack and pinion for actuating said gears and friction devices, a slotted crank, gears and a rack for im parting a backward-aud-forward movement to said slotted crank and means for disconnecting the same, a crank-pin and block movable lengthwise of the said slotted crank, a screw passing through the slotted crank-pin and also through the shaft of the crank for moving the crank-pin nearer to or farther from the crank-shaft and for securing the position of the said crank-pin, a block upon the said crank-pin and ribs upon the surface of the rack forming slideways for said block, whereby the said crank imparts a forwardand-backward movement tothe said rack and the extent of movement of the said rack and consequently the extent of feed of the backlining strip are determined and regulated, substantially as set forth.

22. In a machine for making book-covers, the combination with means for progressively feeding the back-lining strip to tne machine, of a support for the said roll of back-lining strip, plates for holdingthe rollof back-,lining strip in place upon the support and adjust- IIO able guides upon said plates and betweenv which the said strip unwinds as it passes tothe feeding devices, substantially as set forth.

23. In a machine for making book-covers, the combination with means for feeding the back-lining stripinto the machine,of a bracketv arm and a headpiece connected to the frame of the machine, the said headpiece having a curved portion and a groove, an arm pivoted to the said bracket and a handle connected to the said arm, the back-lining strip passingv between the said arm and 'the said groove,

whereby the handle is brought into action to force the back-lining strip between the said arm and into the groove of the bracket-head to remove inequalities and straighten out the strip, substantially as set forth.

24. In a machine for making book-covers, the combination withy the frame, of a bracketheadl and bracket-arm connected to and supported thereby, a shaft 86 carried by the bracket-'arm for supporting the roll of backlining strip, plates upon the said shaft at end of the said bar and adapted to impart a slight turning movement thereto, a spring for holding the said bar in a normal position and causing the said rod to bear frictionally against the slide-block for maintaining the sa1ne and the table in position, and means' adapted to come in contact with the'pile of superposed book-covers for moving the said bent lever and releasing the friction to allow the table to descend, substantially as set 'forth;

28. In a machine for making book-covers,

the combination with a substantially vertical slide-bar and connections therefrom to the iframe of the machine, of a slide-block movable in said slide-bar, a tablefor the pile of superposed covers connected to the said slideblock, afriction-rod placed substantially vertical between the saidslide-bar and slideblock, a crank-arm connected to the upper end of the said rod and adapted to impart a islight turning movement thereto, a spring for holding the said rod in a normal position and substantially as specified and adapted to come.

in contact with the pile of superposed finished covers for periodically releasing the said friction devices for allowing the bracket and'table to descend, substantially as set forth.

26. In a machine for making book-covers, the combination withthe frame and a substantially vertical slide-bar connected therewith, of a slide-block in the said slide-bar, a table connectedv to the said slide-block, and means for frictionally maintaining the relation of the said slide-block to the said slide-y bar, devices operated by the vertical movement of the platen and means connected therewith and adapted to come in contact with the pile of superposed finished covers, and means actuated by the movement of said parts for actuating the said friction devices for progressively releasing and lowering and again engaging the support for the covers, substantially as set forth.

27. In a machine for making book-covers, the combination witha substantially vertical slide-bar and connections therefrom to the frame of the machine, of a slide-block movable in said slide-bar, a table for the pile of superposed covers connected to the said slideblock, avfriction-rod placed substantially vertical between the said slide-bar and slideblock, a crank-arm connected to the upper lcausing the salu rod to bear trlctionally jagainst the slide-block for maintaining the same and the table in' position, a verticallymovable platen and pivoted arms actuated thereby,and means pivotally connected to said arms .and adapted to come in contact with the pile of superposed book-covers for moving the said crank-arm and releasing the :friction-rod toallow the table to descend by gravity, substantially as set forth.

29. In a machine for making book-covers, the combination with a substantially vertical slide-bar and connections therefrom to the frameof the machine, of aslide-block movable in said slide-bar, a table for the pile of. su perposed covers connected to the said slide-block,

a friction-rod placed substantially vertical between the said slide-bar and slide-block, a

ycrank-arm connected t'o-the upper end of the said friction-rod and adapted to impart a slight turning movement thereto, a spring for holding the said friction-rod in a normal position and causing the said rod to bear frictionally against the slide-block for maintaining the saine and the table in position, a vertically-movable platen, arms pivoted to the frame of the machine and connections therefroml to `the said platen whereby a swinging movement is imparted to said arms, a crossbar connecting the free ends of said arms, links pivoted tothe said-arms and connected at theirfree ends by another cross-bar, a bar connected to one of the said links andv depending therefrom and slotted at its lower end and vreceiving in said slot the free end of the aforesaid crank-arm, substantially as and for the purposes set forth.

30. In a machine for making book-covers, the combination with the glue-roll and the cloth-cylinder, of a pivoted shaft and supports therefor, a'lever secured to said shaft, a dry-back scraper connected to said shaft, a spring for actuating said lever in one direc- IOO IIO

tion, and means connected to the cloth-cylinder for swinging the said le ver periodically, substantially as set forth.

31. In a machine for making book-covers the combination with the glue-roller, of the clothcylinder having an annular groove at one end and a notchb or enlargement in the said groove, pins adjustably secured in said groove and a spring actuated lever and scraper operated by the rotation of the clothcylnder and contact with the said pins, substantially as set forth.

32. In a machine for making book-covers, the combination With the glue-roller, of the cloth-cylinder having an annular groove at one end and a notch or enlargement in the said groove, pins adjustably secured in said groove, a pivot-shaft connected to the frame of the glue-cylinder, a lever pivoted to said shaft, a spring for actuating the short end of said lever, the long end of said lever having a curved portion coinciding with the arc of the annular groove in the end of the clothcylinder and having inclined Ways at opposite sides of the said curved portion for engagement with the said pins of the cloth-cylinder, and a dry-back scraper secured to the said pivot-shaft, whereby the said spring acting upon the lever brings the dry-back scraper into contact with the glue-cylinder and the pins in the cloh-eylinder acting upon the long end of the lever periodically swing the lever and remove the dry-back scraper from contact with the surface of the glue-cylinder, substantially as set forth.

Signed by me this 8th day of January, 1900.

ARTHUR I. JACOBS. Witnesses:

S. M. GLADWIN, ROBERT H. SCHUTZ. 

